Texturized Fiberglass Filter Bags With PTFE Membrane
Our glass fiber expanded film covered filter bag adopts excellent alkali free glass as raw material, which is woven into excellent filter cloth through drawing spinning warping weft expansion weaving. It has sufficient mechanical strength.
After pretreatment process and heat setting processing, it has excellent physical and chemical indexes and stable size, and is made into a filter bag that meets the requirements of working conditions. In order to improve the use effect of the filter bag and meet the requirements of specific working conditions, the surface of the filter bag is impregnated with PTFE and coated with PTFE.
The characteristics of alkali free glass fiber are organically combined with the characteristics of temperature and corrosion resistance, good flexibility and easy ash removal of PTFE. The service life and other properties of the filter bag are greatly improved. It is an efficient filter material with high cost performance.
The product has the following characteristics:
(1) High filtering precision
The microporous membrane on the surface of glass fiber expanded membrane filter bag is small and uniform (0.10-2.0 μ m) , it can separate all the dust larger than the micropore diameter, and capture all the dust PM10 (respirable dust) and PM2.5 (respirable dust) seriously damaging human health. Therefore, the dust purification efficiency is high and stable, and can be less than 10mg / m ³ Emission standards.
(2) Light and soft, easy to remove ash
The thickness of filter material is 0.8mm, which is only 1 / 3 of felt filter material, and the texture is soft. During ash cleaning, the filter material shakes in a serpentine shape, and the dust is easy to peel off; Low ash cleaning pressure, less ash cleaning times and longer ash cleaning cycle can effectively reduce the consumption of compressed air, reduce the amount of maintenance and save the operation cost. The base material of glass fiber expanded membrane covered filter bag is two-dimensional glass fiber expanded filter cloth. Due to its structural characteristics, the system operation resistance is more stable than three-dimensional filter material.
(3) High strength, low elongation and stable size
The longitude and latitude strength of glass fiber expanded membrane covered filter bag is not damaged by acupuncture, which is more than several times that of ordinary felt filter material, so it is more suitable for making filter bags with large length and diameter (more than 6m long); It will not shrink under high temperature, almost maintain the original size, will not affect the gap between the filter bag and the skeleton, and ensure the ash removal effect. The elongation of the glass fiber filter bag is less than 3%. During the filtration operation, the self weight of the filter material plus the weight of the dust layer will not cause the extension of the filter bag. At the same time, it also greatly reduces the periodic damage of the filter bag caused by pneumatic ash cleaning.
(4) Outstanding temperature resistance
The glass fiber membrane filter material can operate continuously from above the acid dew point to 260 ℃, and can withstand the high temperature of 280 ℃ for 2 hours. Glass fiber expanded membrane covered filter material is baked in 280 ℃ oven for 2 hours, and its physical and chemical indexes and color remain unchanged, which is not available for other filter materials.
(5) Oxidation and corrosion resistance
The glass fiber expanded membrane filter bag will not be oxidized by oxygen or nitride, so it is unnecessary to consider the problem of high and low oxygen content in the dust collector. The corrosion resistance of glass fiber is outstanding, and after the whole filter material is impregnated with PTFE, PTFE will form a dense protective film on the surface of glass fiber, so ma301 filter bag will be eroded very little during operation.
(6) Water and oil repellent, suitable for working conditions with high moisture content
The hydrolysis resistance of glass fiber is very good, which belongs to class I hydrolysis resistant fiber. On this basis, the glass fiber substrate is coated with PTFE. After application test, its waterproof grade is more than 4.5, which eliminates the adsorption of water by the filter material and effectively reduces the hardening phenomenon after condensation.